If fuel temp indicates -5.4C, there is a short circuit or the sensor is bad/inoperative. If the car has been sitting overnight (for example) these should all equate to approximately ambient air temperature. Right cruise control system 6 digit display has a 1, left to right, when: If start of injction (actual) is later than 2 ATDC, injection pump is set too retarded, injection adjustment blocked, or cold start injector inoperative.Ĭruise control system (indicates if activated, 0 = activated but switched off, 1 = activated, swtiched on, 255 = not activated)Ĭruise control system left digit: Clutch switch closed (clutch not depressed) = 0, 1 = clutch depressedĬruise control system middle digit: CC/DFI brake pedal switch open (brake pedal depressed) = 1, 0 = pedal not depressedĬruise control system right digit: brake light switch depressed pedal = 1, not depressed = 0 If start of injection (actual) is before 3 BTDC, engine too cold, injection pump set too advanced, or cold start injector inoperative. If start of injection (specified) is earlier than 3 BTDC, engine too cold. Start of injection (actual): 2 ATDC - 3 BTDC Start of injection (specified): 2 ATDC - 3 BTDC 550mg/H over the complete RPM and load range. If a DTC is present, air mass actual will have a constant value of approx. Reading should be within that time period.) (Note: EGR is turned off after approximately 2 minutes of idle. If air mass actual is above 370 mg/H, engine is cold, insufficient EGR, or bad MAF sensor If air mass actual is below 230 mg/H, excessive EGR or an air leak. If air mass specified is above 370, engine too cold. Operating condition right digit: AC compressor switched onĪir mass drawn in (specified): 230 - 370 mg/HĪir mass drawn in (actual): 230 - 370 mg/HĮGR vacuum solenoid duty cycle: 40 - 75 % Operating condition middle digit: Closed throttle position switch is closed (foot not on pedal) Operating condition left digit: 1 = idle increased because AC is on Throttle should go 0 - 100 depending on pressure applied to "go" pedal If above 2.000 volts - injection is too lean, or engine is cold If below 1.450 volts - injection too rich If above 9.0 - injection is running too lean, or the engine is cold If below 2.2 - injection is running too rich Modulating piston displacement sensor voltage: 1.450 - 2.000 VĮngine coolant temperature sensor: 80 - 110 C
These are valid ranges only when the EGR is switched on, engine at idle and at least 80C (176F) coolant temp. Intake Manifold Temperature: 182 - 50 = 10 - 110 degrees Cįuel Temperature: 91 - 201 = 20 - 80 degrees C Injection quantity: 11 - 45 = 2.2 - 9.0 mg/strokeĮngine coolant temperature: 80 - 35 = 80 - 110 degrees C Start of injection: range 12 - 75 = 2 degrees ATDC - 3 degress BTDC Actual labels/values displayed may vary.Įngine idle speed: range 42 - 45 = 870-950
How to adjust and test fuel IQ with VCDS or how to do you just changed your nozzles to restore the fuel injectors, they are Since this test will not hurt your car.Based on the Bentley CD but includes other groups not documented there. Injector diagnosis (You can't diagnose injectors using VCDS) like the B5 passat cannot self diagnose a cooling problem so you have to do a test like this. The Output Tests function is used to test a Control Module's Electrical To activate a Fuel Injector, you must press (and in some cases release) the gas pedal. Hi I'm new with the vcds and would to get some advice on this reading I think is injector correct me if I'm wrong.